Shanghai Jintai SC35 two-wheel mixing rig has been successfully applied to the construction of water conservancy impervious wall

【China Deep Hole Rig Trading Network】

A few days ago, the exciting news came from the project department of the Moon Bay Reservoir Project in Hezedan County: Shanghai Jintai SC35 double wheel agitation drilling rig, which was first applied to the construction of water conservancy cutoff walls, achieved the first battle of amazing efficiency of 20 mixing walls per day. Winners. According to this schedule, the duration of the impermeable walls of the project can be shortened by 1/3. This is the first time since Shanghai Jintai SC series products were officially put on the market in 2014, they have entered the domestic water conservancy project construction field for the first time and become the main machinery for the construction of leading impervious wall.

The exploration and design data of the project shows that Shan County Moon Bay Reservoir is located about 25km southwest of Shan County, Heze City, and is adjacent to Fulong Lake to the east. The reservoir is a small (1) type reservoir, and the project has a permanent footprint of 2013.32 mu; the dam axis length is 7882m, and the design depth of the reservoir is 6.65m; the formation lithology is mainly sandy loam, clay, silt and fine silt, and the impervious wall is designed. The depth is 18.5m.

According to the person in charge of the Ministry of Construction, the original design scheme for the dam body and dam foundation was "seepage control technology for vertical vibration impervious form wall impervious board," and due to many reasons such as vibration, noise, efficiency, and stability of the caster construction machinery, the construction The progress is very slow, especially in the construction process, due to the excessive vibration intensity of the machinery, cracking occurs in the walls of residential buildings around the dam foundation. It was originally a “livelihood project” to improve the drinking water quality of local residents. Nuisance project." After the occurrence of the situation, the project construction unit attached great importance. After extensive investigation and demonstration, it extensively listened to the opinions of experts on the feasibility of applying the SMC construction method (deep milling and mixing method) to the construction of the reservoir cut-off wall, and adopted the original design plan and the SMC construction method. The construction cost, construction efficiency, equipment price and applicability and other factors were compared and demonstrated. The conclusion is: "The comprehensive cost of using the SMC engineering equipment for impervious wall construction does not exceed the original budget!" For this reason, the construction party decided to use the Shanghai Jintai SC35 two-wheel mixing drilling rig to dominate the construction of the impervious wall of the project.

Shanghai Jintai SC series double wheel agitation drilling rig is an innovative product for the construction of underground continuous wall through "deep milling and stirring process" for complex geological conditions. This product has been in research and development for four years and has undergone tests of typical complex geologic conditions such as clay, fine silt, cobbles, and micro-weathered rocks. Currently, it can be used for deep-stirring underground continuous wall construction of more than 60 meters regardless of the construction. Efficiency or equipment stability indicators have reached the international advanced level, the product cost performance is significantly better than foreign brands of similar products.

The performance of SC35 since entering the market for a month is impeccable. In the interview, a yellow manager in charge of construction commented: “With the use of Shanghai Jintai SC equipment, the construction schedule has been significantly increased by 4 to 5 times, labor costs and material costs have been significantly reduced, and the performance of the SC is very high. The company's after-sales service staff are also very dedicated. The next few years will be the 'golden period' for the development of the country's water conservancy construction. With the support of Shanghai Jintai, we will have more confidence in expanding our business in the water conservancy industry in the future!"

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